 
(* ::Section:: *)
(* FVE *)
(* ::Text:: *)
(*FVE[p, mu] is the D-4-dimensional vector p with Lorentz index $\mu$..*)


(* ::Subsection:: *)
(* See also *)
(* ::Text:: *)
(*FCE, FCI, FV, FVD, Pair.*)



(* ::Subsection:: *)
(* Examples *)



FVE[p,\[Mu]]

FVE[p-q,\[Mu]]

FVE[p,\[Mu]]//StandardForm

FCI[FVE[p,\[Mu]]]//StandardForm


(* ::Text:: *)
(*There is no special function to expand momenta in FVE.*)


ExpandScalarProduct[FVE[p-q,\[Mu]]]

StandardForm[%]

Contract[FVE[p,\[Mu]]FV[q,\[Mu]]]
